Duncan Mara  <br/><br/>
Guildelines for the safe use of wastewater and excreta in agriculture and aquaculture 

 - Delhi  CBS  1991 
 - iii,187 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Guideline for the safe use of wastewater
<br/><br/><label>Dewey Class. No.: </label>59.807/M323G